MAINTENANCE FORMS, RECORDS, AND REPORTS.

TM 32-5865-216-24&P

1-2.

Department of the Army forms and procedures used for equipment

maintenance will be those prescribed by DA PAM 738-750, The Army

Maintenance Management System (TAMMS).

1-3.

DESTRUCTION OF ARMY MATERIEL TO PREVENT ENEMY USE.

Procedures for the destruction of Army materiel are contained

in TM 750-244-2, Procedures for Destruction of Electronics Materiel

to Prevent Enemy Use (Electronics Command).

1-4.

REPORTING OF ERRORS.

The reporting of errors, omissions, and recommendations for

improving this publication by the individual user is encouraged.

Reports should be submitted on DA Form 2028 (Recommended Changes to

Publications) and forwarded directly to the Commander, U.S. Army

Electronic-Materiel Readiness Activity, EMRA, Vint Hill Farms

Station, Warrenton, Virginia 22186, Attn: SELEM-ME-E.

REPORTING EQUIPMENT IMPROVEMENT RECOMMENDATIONS (EIR).

1-5.

If your tunable coupler needs improvement, let us know. Send

us an EIR. You , the user, are the only one who can tell us what you

don't like about your equipment.

Let us know why you don't like the

design or performance.

Put it on an SF 368 (Quality Deficiency

Mail it to us at U.S. Army Electronic Materiel Readiness

Report).

Activity, EMRA, Vint Hall Farms Station, Warrenton, Virginia 22186,

Attn: SELEM-ME-E.

We'll send you a reply.

SECTION II.

DESCRIPTION AND DATA

1-6. DESCRIPTION.

In addition to the description provided herein, refer to TM

32-5865-012-10 for a general description and illustration of the

tunable coupler. The tunable coupler is a metal enclosure that

contains seven circuit card assemblies (CCAS), two RF relays, an RF

switch assembly, a stepper motor, and four multipin connectors

mounted on the front panel. The tunable coupler controls the RF path

between external transmit and receive equipments and an external VHF

antenna as commanded by digital data inputs.

In addition, the

tunable coupler receives antenna-deployed switch and DF inputs from

external equipment in the system. The inputs are combined with other

status signals generated in the tunable coupler and output to

external equipment in the system. Tunable coupler power and

input/output connections are made at the front panel (see table 1-1).

1-2